Yew Planks - Made by cutting yew logs into planks as a additional options.
Planks are 1x3, thin and narrow piece of wood that are used to make bows or tools.
They are flexible and as such, 1 plank is needed for 3 pieces of strings.
Yew Bow can be a bow that is in between ranger bow and wooden bow.
160 base damage and has a perk that grants it faster aim speeds than a ranger bow.
The material cost can be increased by requiring bone glue and leather.
1x Plank / 1x Bone Glue / 1x Leather / 3x String
And the possibility of tweaking all bow aim speeds to scale with this new bow:
Sling - 1x
Wooden Bow - 2x
Yew Bow - 2.5x
Ranger Bow - 4x
You can probably craft a hatchet with a plank, giving access to middle tier axe and tools maybe.
Hatchet - 140 base damage, crafted with a plank and metal. Basically provides a 'step up' from stone axes.
1x Plank / 1x Bar of Wrought Iron
Looks like this:

Actually if you incorporate 'planks' in general or some kind of wood that takes a while to cut out and sand down, into a useful handle for axes and such, then it would work out pretty well.
Swords needs a value increase, they aren't simply a block of wood with iron bars, it's actually intricate with the glue and strings/rope around the handle, and then gluing a piece of leather on the handle. In most cases leather isn't used unless it's some sort of grip that is needed, where cloth is suffice instead of leather.
Adding the bone glue, string, and leather into the sword crafting would boost up it's value.